NCERT Solutions | Class 7 Science Chapter 1 | Nutrition in Plants

CBSE Solutions | Science Class 7

Check the below NCERT Solutions for Class 7 Science Chapter 1 Nutrition in Plants Pdf free download. NCERT Solutions Class 7 Science were prepared based on the latest exam pattern. We have Provided Nutrition in Plants Class 7 Science NCERT Solutions to help students understand the concept very well.

NCERT | Class 7 Science

NCERT Solutions Class 7 Science
Book:	National Council of Educational Research and Training (NCERT)
Board:	Central Board of Secondary Education (CBSE)
Class:	7th
Subject:	Science
Chapter:	1
Chapters Name:	Nutrition in Plants
Medium:	English

Nutrition in Plants | Class 7 Science | NCERT Books Solutions

You can refer to MCQ Questions for Class 7 Science Chapter 1 Nutrition in Plants to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

cbse science class 7 book pdf, Question 1.

Why do organisms need to take food?

cbse science class 7 solutions, Answer :

Organisms need to take food to

get the energy to do work.
build up the body.
repair damages in the body.
maintain the functions of the body.

cbse science class 7 Chapter 1, Question 2.

Distinguish between a parasite and a saprotroph.

ncert class 7 science Chapter 1 question answer, Answer :

Parasite	Saprotroph
1. A parasite takes the food from the organism on which it survives.	1. They secrete digestive juices on the dead and decaying matter and convert it into a solution
2. They feed on a living organism.	2. They feed on dead and decaying matter.
3. The organism on which it survives is called host.	3. They do not feed on a living organism.
4. It deprives the host of valuable nutrients.	4. There is no host at all.

cbse science class 7 syllabus, Question 3.

How would you test the presence of starch in leaves?

cbse science class 7 solutions, Answer :

Take two healthy green potted plants of the same kind in order to remove all the starch from the leaves.
Keep one in the darkroom (or in a black box) for 72 hours and the other in the sunlight.
Now, take one leaf from each of the plants.
Put few drops of iodine solution on each of the leaves.
The leaf kept in the sunlight will turn blue-black due to the presence of starch.
The leaf kept in the dark will not turn blue-black because of the absence of starch.

class 7 science Chapter 1, Question 4.

Give a brief description of the process of synthesis of food in green plants.

ncert class 7 science Chapter 1 question answer, Answer :

The leaves of a plant have a green pigment called chlorophyll. In the presence of sunlight, they use carbon dioxide and water to synthesize carbohydrates.
Carbon dioxide + Water \(\xrightarrow [ Sunlight ]{ Chlorophyll } \) Carbohydrade + Water + Oxygen
During the process, oxygen is released. The carbohydrates ultimately get converted into starch.
Carbon dioxide from the air is taken through stomata. Water and minerals are absorbed by the roots and transported to the leaves.

NCERT Class 7 Science book, Question 5.

Show with the help of a sketch that plants are the ultimate source of food.

cbse science class 7 solutions, Answer :

NCERT Solutions for Class 7 Science Chapter 1 Nutrition in Plants Q.5

Fig. Plants capture solar energy by a unique process called photosynthesis

NCERT Class 7 Science book PDF, Question 6.

Fill in the blanks:

Green plants are called …….. since they synthesize their own food.
The food synthesized by the plants is stored as ………
In photosynthesis solar energy is captured by the pigment called ……….
During photosynthesis plants take in ……… and release ……….

ncert class 7 science Chapter 1 question answer, Answer :

autotrophs
starch
chlorophyll
carbon dioxide, oxygen

ncert class 7 science Chapter 1, Question 7.

Name the following:

A parasitic plant with a yellow, slender, and branched stem.
A plant that is partially autotrophic.
The pores through which leave exchange gases.

cbse science class 7 solutions, Answer :

Cuscuta
Insectivorous plants
Stomata

ncert class 7 science Chapter 1 notes, Question 8.

Tick the correct answer:
(a) Amarbel is an example of:
(i) Autotroph
(ii) Parasite
(iii) Saprotroph
(iv) Host
(b) The plant which traps and feeds on insects is:
(i) Cuscuta
(ii) China rose
(iii) Pitcher plant
(iv) Rose

ncert class 7 science Chapter 1 question answer, Answer :

(ii) Parasite
(iii) Pitcher plant

NCERT Science book Class 7 Solutions PDF free download, Question 9.

Match the items given in Column I with those in Column II.

Column I	Column II
Chlorophyll	Bacteria
Nitrogen	Heterotrophs
Cuscuta	Pitcher plant
Animals	Leaf
Insects	Parasite

cbse science class 7 solutions, Answer :

Column I	Column II
Chlorophyll	Leaf
Nitrogen	Bacteria
Cuscuta	Parasite
Animals	Heterotrophs
Insects	Pitcher plant

ncert science class 7 book, Question 10.

Mark T if the statement is true and ‘F’ if it is false:
(i) Carbon dioxide is released during photosynthesis. (T/F)
(ii) Plants which synthesize their food are called saprotrophs. (T/F)
(iii) The product of photosynthesis is not a protein. (T/F)
(iv) Solar energy is converted into chemical energy during photosynthesis. (T/F)

ncert class 7 science Chapter 1 question answer, Answer :

(i) F
(ii) F
(iii) T
(iv) T

ncert science class 7 Chapter 1, Question 11.

Choose the correct option from the following:
Which part of the plant takes in carbon dioxide from the air for photosynthesis?
(i) Root hair
(ii) Stomata
(iii) Leaf veins
(iv) Petals

cbse science class 7 solutions, Answer :

(ii) Stomata

ncert science class 7 pdf free download, Question 12.

Choose the correct option from the following:
Plants take carbon dioxide from the atmosphere mainly through their:
(i) roots
(ii) stem
(iii) flowers
(iv) leaves

ncert class 7 science Chapter 1 question answer, Answer :

(iv) leaves

ncert science class 7 solutions, Question 13.

Why do farmers grow many fruits and vegetable crops inside large greenhouses? What are the advantages to the farmers?

cbse science class 7 solutions, Answer :

Most of the crops require a lot of nitrogen to make protein. After the harvest, the soil becomes deficient in nitrogen. Though nitrogen gas is available in the air, plants cannot use it directly. They need nitrogen in a soluble form. The bacterium called Rhizobium can take atmospheric nitrogen and convert it into soluble nitrogenous components. Rhizobium is present in the roots of some fruits and vegetables and legumes plants which provides nitrogen to them. By crop rotation, farmers increase the nitrogenous compounds in soil. So there is no need to add nitrogenous fertilizers to the soil in which leguminous plants are grown. By this practice, farmers provide good quality crops and save money.